Hello every one;
An electric bike builder better knows how to play with bicycle parts, so I come up with this idea of using bicycle wheel as my alternator rotor. Here is a quick video. http://www.youtube.com/watch?v=gJ9mxuMnnu4
I have hooked an empty rim onto a bicycle wheel which is a miniature one of only 8.5 inch diameter which suits my need.
I have 12 hard drive magnets that I have been using them for testing lately and getting good results (only 6 of them during testing phase).
I have noticed that during testing I stuck the magnets onto a metal plate which yielded good result while sticking them onto the rim it is not so, therefore, I’m intending to make a plate of the same diameter size and put the magnets on the plate.
There is one more thing I would add here; Arial coils don’t yield much until provided with a metallic core dramatically increase voltage. So I got to do something about it.
After doing the math I came up with this:
Total coils = 18 means, per phase coils = 6
One coil has to produce 2.5 volts or more for desired goal of about 22 – 24 volt
One coil volt = 2.5, for six coils in a phase = 2.5 x 6 = 15.
Having a star winding end volt of 3 phases = per phase voltage x 1.732
So, 15 x 1.732 = 25.98
The wire I have used is 24 swg it is thin but I don’t want that much and it can slowly charge my batteries while there is a major power break down. Moreover, I must mention that hard drive magnets have a misplaced North and South poles therefore, not sufficient power can be achieved using these magnets. I am getting a little so I have to live with it for having no sources for better neo magnets.
Any feed back, (constructive criticism) is more than welcome.